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A091464
as a simple table
n
a(n)
1
17
2
323
3
6506
4
130664
5
2624438
6
52713275
7
1058774426
8
21266052797
9
427140088670
[17,323,6506,130664,2624438,52713275,1058774426, 21266052797,427140088670]